Diff Ratio
I'm getting my diff ratio changed to a 3.9 tomorrow in my vy ss and im just wondering will the speedo need to be re-calibrated? Would i need to get it done straight away because if it says im going 60 i could be going faster?
Cheers
If you're going from a factory diff ratio to 3.9's you will be going about 10% slower than your speedo says, not faster. If they can recalibrate it on the spot, you might as well get it done...but there's no hurry.
Great help, thanks for the reply!
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